#include <stdio.h>
unsigned int reverse_byte(char *c, char num)
{
unsigned int r = 0;
int i;
for (i=0; i<num; i++)
{
r |= (*(c+i)<<(((num-1)*8)-8*i));
}
return r;
}
int main()
{
int data = 0x12345678;
int i = 0;
char s;
unsigned int out;
while(1)
{
scanf("%d", &i);
out = reverse_byte((char*)(&data), (char)i);
printf("%x\n", out);
}
}
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